Clinometer



Patented Aug. 28, 1923.

AUGUST SAMUEL AEGER'IEK 01 BASEL, SXVET'ZERLAI\ID, Assmnon 011 .ONE-I-IALF T0 y FRIEDRICH GRUNDER, OF RUT'I'I, SINITZERLAND.J

CLINOMEIER.

Application filed May 13,

T0 all whom z'z5 mag; concevm:

Be it known that I, AUGUST SAMUEL IEGERTER, a citizen of the Swiss Confedera- Zion, und residing at Basel, SW' zerland, have invented certain new und useful Improvements in Clinometers, of which the following is 21 Specification.

This inventionrelates t0 cliuometers und its main object is to provide an instrument which shal1 enable any inclination in r@1a ti0n 110 21 vertical plane 130 be indicated Wih great accuracy.

T0 this end; a clinometer according t0 my invenciou comprises an indicating membar that is mountecrto swing ubou 11 horizon axis in freut 0'f a scale, is normally held perpendicular by a We1ght und 1s prov1ded W1th V two vanes f'or damping its oscillations.

The apparatus can be used for a very large number of purposss, it may be bui1t on to 0x into' implements, instruments andthe 1ike, und is adapted for u se by anyone requiring clinometric indicamons, for ex aznple by masons, carriage builders, eng1neers, builders 0f aircraft, archi tects und others.

The invention cons'ists in the c-onstruct1ou, arrangement und co mbination 0E parts described hereinafter und pointed out in the claims.

One embodiment of the invention is illustrated by way 0'f exzunple in the uccompanying drawing, wherein 1- Figure 1 is a front elevation,

Fiure 2 is a central wartical section, und

Figure 3 is zftop plan view showing, one form of clinomeaer according t0 n1y invention.

The apparatus comprises a p0inter a naving tw0 vanes b for damping its oscillations und a bifurcated weight c which norma1ly maintains the pointer perpendicular The pointer may be made in one piece 0r ii; may be bui1t up 01 several parts und is mounced fast 0n an ax1e or arbor d that is journaled b y its pointed ends in two g1ass disks e eurried in a metal n'1ount z. F01 reducing frietion two jewels j may be let into the g]ass disks e, but such stones need n0t be used.

In order t0 set the ppamt-us to any in- C1ination 01 t0 accurately check uny change in a given inclination there is provided between the two glass disks e an annulus (y that is attache l to the metal mounb i und has a circular scale h. As shown in Figure 1920. Seria1 N0. 381,006.

t0 be read fr0m above when this is more convenient. When building structures under water it may fre0{uently happen that th e instrument must be immersed in the Water, in Which eVent it would not be possible to read the instrument from the side,-whilst it quitepossible t0 reac1 it from above, thiS beinp; more convenient particularly when the iustrument is located near the ground. In the one g1ass 6 is rotatably mounted a brake 0 formed of bent wire embrucing the t w0 sides of the g1ass; by resSing this brake aguinst the axle (Z the p01nter can be stopped at once und he1d in any desired position.

The mount z n1ay be provided with tw0 1ugs k, 0r more if' desirec1, by means 0'f which Ithe instrument 02m be Screwed on to implements 01 tools, suchas a masons 1evel,

straightedge o1 the 1ike. y Instead 01": being screwed on, the mstrument can be built into such impleinents for determinirig inelinati0n, such as stmigh-edges. In this case, f0r examp1e, the instrument can be first placed an a W0rking drawin suspended in the proper position, then the Inc1ination of a ]ine so be draWi1 can be determined thro1igh the g1asses e, whereupon the mstrument can .be laicI against the workpiece in the same said mile, and a brake pi'votally mounted in one 0f the said glass disks and having means 10cated exterior of s aid disk adapted t0 be pressed by Band aga'inst "the jsaid a xle t0 thereby stop th6 p0inter in any position.

2. The combination as set forth i'ri claim 5'1 5 in which the 'saicl brake is formad of a bent wire embracing the twosides 0'f the g1ass disk, and rotatably mounted therein.

3. The combination as sei: forth in daim l, in whichthe said circular mount is provided With a pe1ipheral aperture, and in- 10 cluding a 'transparent graduated disk, closing'said aperture so as to en'able the reading oi the angle in ilinaion 0:E abov.e.

In testimony whereofl affix my signature.

A. s. AEGERTER. 

